Harry/Murphy, Sherlock/John. Set post-Skin Game and post Sherlock S3. When you've seen people you love die, when you yourself die (or as close to as humanly possible), when you become a pawn (a "Knight") to one of the deadliest forces out there...most things don't faze you as they once would.

A detective. Tall. Long coat. Keeps a human skull lying around his living room. Really, these descriptors shouldn't apply to more than one person. Apparently this is not the case. -*- A short ficlet prologue that will be continued. At some point. Honest. Rated T because I have exactly no idea how long or violent this story may become.

Some criminals in London weren't conventional. Supernatural threats abound, and Sherlock and John needed to take care of those, as well. No slash. One shot to pave way for a possible multi-chaptered fic. Sherlock-centric, this one.